Nut-lock.



- N0. 782,329. PATBNTED FEB. 14, 1905.

H. K. FORBIS.

NUT LOOK.

nrmunmx rmzn APK.1B,1904.

WI I NESSES lNVENTOR HarJeri [TE/1&5

d a? (73% BY I I ATTORNEYE Patented February 14, 1905.

ATENT OFTTCE.

HARBERT K. FORBIS, OF COLUMBUS, OHIO.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent N0. 782,329, dated February14, 1905.

Application filed April 18, 1904;. Serial No. 203,658.

To all whom it may concern.-

Be it known that I, HARBERT K. FoRBIs, a

citizen of the United States, residing at Oolumbus, in the county ofFranklin and State of Ohio, have invented a certain new and usefulImprovement in Nut-Locks, of which the tion serves to mash the threadswhen the plate is drifted on the bolt, and thus securely hold thelocking-plate without mutilating the bolt to such an extent that the nutcannot be turned past the mashed threads. 7

Another object resides in a lockingplate a which may beapplied to anyordinary bolt and at the same time to obviate such antecedent steps asforming grooves and notches in the bolt or flattening the sides thereof.

Finally, the object ofthe invention is to provide a device of the typeset forth that will be strong, durable, and efiicient, and simple andinexpensive to make, and one which is not liable to get out of workingorder.

With the above andother objects in view the invention consists of thenovel details of construction and operation, a preferable embodiment ofwhich is described in the specification and illustrated in thedrawings,where- Figure 1 is a plan view of the locking-plate. Fig. 2 isa plan view of a coupled nut and bolt, showing the locking-plate inplace. Fig. 3 is a longitudinal sectional view taken on line 1 y of Fig.2. Fig. 4 is a front elevation of a nutand bolt, showing thelocking-plate. Fig. 5 is an elevation showing the lockingplate intransverse section on line 00 m of Fig. 2.

Fig. 6 is a plan view of a slightly-modified form of locking-plate, andFig. 7 is a side elevation showing the modified locking-plate applied toa nut and bolt in its locking position.

In the drawings the numeral 1 designates the locking-plate, which ispreferably rectangular in shape and formed of any suitable metal. The

venting the latter from turning.

' plate is formed witha keyhole-slot having the enlarged portion Qandthe contracted portion 3. The portion 2 is preferably formed slightlylarger than the diameter of the bolt to which the plate is to beapplied, thus allowing the same to be readily slipped on the bolt overthe threads thereof, while the contracted portion 3 has a width equal tothe diameter of the bolt between the threads. In applying the plate thebolt 4: is inserted through the opening 2 and the nut 5 turned down onthe threads until it impinges the plate. The plate is then given a fewsharp blows upon its rear end 6, which drifts it forward, causing thecontracted portion 2 to mash down the threads 7 of i the bolt and tostand about the same, as shown in Figs. 3 and 5. It will be readily seenthat the plate and the bolt are thus fixedly con nected and that it isimpossible for the plate to turn on the bolt, or vice versa. The for-Ward end 9 of the plate is then bent upward against the front faceof-the nut 5, forming a right-angular seat for the same and securelylooking it against turning. Should it. be desired to remove the nut. itis only necessary to bend the forward end of the plate downward to ahorizontal position, as shown by dotted lines in Fig. 3, and force thesame backward by a few sharp blows, causing the bolt to stand in theenlarged portion 2 of the slot, when the nut may be turned 011' the boltand the plate removed.

In Figs. 6 and 7 I have shown a slightlymodified form of locking-plate.is provided with projecting side portions 8, which when the plate isapplied to the bolt, as hereinbefore described, are bent up at rightangles'to the plate to form flanges which impinge the opposite sides ofthe nut, thus pre- It is evident that the bolt-body proper is in no waymutilated or injured and that merely the threads engaged bythelocking-plate are mashed on their opposite sides and that'by slightlyincreasing the energy exerted in turning the nut on the bolt it may beeasily carried over the mashed threads. The locking-plate may be readilyapplied to a bolt without disconnecting the same from its position as noalter- The plate 1 1 ation to the bolt proper is necessary, as is thecase where grooves, notches, and flattened surfaces are employed.

I do not Wish to limit myself to the exact details of construction andoperation set forth,

as I may make various changes in the same Without departing from thespirit of my invention.

Having now fully described my invention,

I0 What I claim, and desire to secure by Letters Patent, is

In a nut-lock, the combination with a nut and a bolt, of a locking-platehaving an open ing through which the bolt freely passes, and

an extension of said opening of less Width I5 whereby said locking-platebeing driven laterally on the bolt mashes the threads thereof, and aportion of said plate being turned up to lock the nut against rotation.

HARBERT K. FORBIS.

In presence of M. B. SoHLEY,

W. L.YMORROW.

